Home / 98,680.80-136,194.84-64,787.62

Finding the Fourth Proportional to 98,680.80, 136,194.84 and 64,787.62

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Solution

The fourth proportional to 98,680.80, 136,194.84 and 64,787.62 is: 89,416.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,680.80 : 136,194.84 = 64,787.62 : x
  2. Step 2: Convert to fraction form
    98,680.80/136,194.84 = 64,787.62/x
  3. Step 3: Cross multiply
    98,680.80x = 136,194.84 × 64,787.62
  4. Step 4: Simplify right side
    98,680.80x = 8,823,739,539.88
  5. Step 5: Solve for x
    x = 8,823,739,539.88/98,680.80
  6. Step 6: Final answer
    x = 89,416.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.